153958 (2002 AM31)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4514220293 ± 3.71e-09
Semi-major axis (a)1.7032680436 AU ± 1.46e-09
Inclination (i)4.64444760° ± 1.03e-06
Long. of Asc. Node (Ω)144.36077985° ± 6.31e-06
Arg. of Perihelion (ω)197.94555713° ± 5.14e-06
Mean Anomaly (M)344.28180112° ± 2.97e-06
Mean Motion (n)0.4433919241°/day ± 5.70e-10
Perihelion dist (q)0.93437533 AU ± 6.37e-09
Aphelion dist (Q)2.47216076 AU ± 6.67e-09
Orbital Period2.22292340 yr ± 2.86e-09
Physical Parameters
H (abs. magnitude)18.35
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.332″
Uncertainty0
Orbit TypeApollo
MOID0.032204 AU
Observations Used781
Radar Obs Used8
Oppositions16
Arc Total1983-2025
First Observation Used1983-05-07
Last Observation Used2025-04-26
Observations (828)
Date Type RA Dec Mag Band Observatory
2020-01-21 11:13:34 C 09 50 45.430 +11 42 39.47 U F52
2020-01-22 10:00:39 C 09 49 34.775 +11 50 23.72 U F51
2020-01-22 10:16:19 C 09 49 33.937 +11 50 29.11 U F51
2020-01-22 10:32:02 C 09 49 33.090 +11 50 34.53 U F51
2020-01-22 10:47:51 C 09 49 32.239 +11 50 39.96 U F51
2020-01-26 08:49:22 C 09 44 26.33 +12 23 42.2 V G96
2020-01-26 08:56:43 C 09 44 25.87 +12 23 45.5 V G96
2020-01-26 09:04:07 C 09 44 25.41 +12 23 48.0 V G96
2020-01-26 09:11:31 C 09 44 25.01 +12 23 50.8 V G96
2020-01-27 12:54:56 C 09 42 51.134 +12 33 54.05 U F52
2020-01-27 13:12:50 C 09 42 50.092 +12 34 00.51 U F52
2020-01-27 13:30:44 C 09 42 49.031 +12 34 06.82 U F52
2020-01-27 13:48:36 C 09 42 47.991 +12 34 13.25 U F52
2020-02-01 07:56:09 C 09 36 08.86 +13 16 20.5 V G96
2020-02-01 08:03:27 C 09 36 08.40 +13 16 23.8 V G96
2020-02-01 08:10:46 C 09 36 07.95 +13 16 26.3 V G96
2020-02-01 08:18:04 C 09 36 07.50 +13 16 28.9 V G96
2020-02-14 07:43:42 C 09 17 26.24 +15 10 32.3 V G96
2020-02-14 07:51:05 C 09 17 25.81 +15 10 34.9 V G96
2020-02-14 07:58:28 C 09 17 25.35 +15 10 37.3 V G96
2020-02-14 08:05:50 C 09 17 24.90 +15 10 39.7 V G96
2021-11-05 03:46:51 C 08 25 51.05 +13 02 51.4 Z C95
2021-11-05 04:08:09 C 08 25 51.75 +13 02 47.8 Z C95
2021-11-09 14:05:30 C 08 28 44.011 +12 48 14.57 U F51
2021-11-09 14:21:09 C 08 28 44.332 +12 48 12.68 U F51
2021-11-09 14:43:00 C 08 28 44.786 +12 48 09.93 U F51
2021-11-09 14:58:44 C 08 28 45.101 +12 48 08.09 U F51
2021-12-08 03:39:30 C 08 24 08.77 +12 48 54.4 20.6 q J43
2021-12-08 03:48:51 C 08 24 08.43 +12 48 55.5 20.2 q J43
2021-12-08 03:58:14 C 08 24 08.04 +12 48 56.9 20.5 q J43
2021-12-08 04:07:35 C 08 24 07.67 +12 48 57.6 20.5 q J43
2021-12-12 18:51:34 C 08 19 21.27 +13 07 13.1 V D29
2021-12-12 19:10:39 C 08 19 20.30 +13 07 16.3 V D29
2021-12-12 19:29:45 C 08 19 19.29 +13 07 20.0 V D29
2021-12-26 18:03:02 C 07 59 06.04 +14 29 30.1 V D29
2021-12-26 18:52:41 C 07 59 02.45 +14 29 44.6 V D29
2021-12-28 15:40:53 C 07 55 50.33 +14 43 04.5 V D29
2021-12-28 16:21:37 C 07 55 47.03 +14 43 19.9 V D29
2021-12-30 19:20:47 C 07 52 02.22 +14 58 52.9 V D29
2021-12-30 19:41:09 C 07 52 00.66 +14 58 59.2 V D29
2021-12-30 20:01:31 C 07 51 59.08 +14 59 05.1 V D29
2022-01-06 07:30:44 C 07 40 15.65 +15 48 20.0 V G96
2022-01-06 07:38:12 C 07 40 15.08 +15 48 22.4 V G96
2022-01-06 07:45:41 C 07 40 14.49 +15 48 25.0 V G96
2022-01-06 07:53:09 C 07 40 13.91 +15 48 27.3 V G96
2022-01-07 07:51:20 C 07 38 25.385 +15 56 09.27 U F52
2022-01-07 08:08:38 C 07 38 24.039 +15 56 14.92 U F52
2022-01-07 08:43:19 C 07 38 21.336 +15 56 26.29 U F52
2022-01-07 17:48:06 C 07 37 39.62 +15 59 18.9 V D29
2022-01-07 18:44:06 C 07 37 35.25 +15 59 36.4 V D29
Radar Observations (8)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2012-07-12 02:47:00 69235472.11 4 us 2380 -1 -1
2012-07-15 03:08:00 55498824.2 0.5 us 2380 -1 -1
2012-07-15 03:20:00 438181.029 1 Hz 8560 -14 -14
2012-07-17 08:10:00 46712279.22 3 us 8560 -14 -14
2012-07-17 09:20:00 46539849.55 2 us 8560 -14 -14
2012-07-23 07:20:00 35089313.22 1 us 8560 -14 -14
2012-07-27 12:10:00 42926600.19 2 us 8560 -14 -14
2012-08-07 13:11:00 92998198.65 0.5 us 2380 -1 -1
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)